You would prefer them to avoid popular places where many people wish to fly to and diversify into places to where no one wishes to visit?
No I think they should continue to fly to their destinations but could consider doing some of them from Stansted since only Ryanair flies to the popular destinations in a lot of cases such as Alicante, Barcelona and Faro whilst Gatwick has loads of alternative flights and airlines. They could get themselves a good deal with the new oweners of Stansted and fill the gap left by EasyJet who have been axing the popular sun and city routes.
What's the point of basing aircraft at Stansted, when you already have a base, headquarters and primary maintenance facility at Luton?
EasyJet have four London airports, all on a much greater level than Monarch so they could easily serve Stansted alongside Luton. The problem is that Luton also has a similar problem with either EasyJet (the low-cost option) or Thomson (the better service option) if not both, offering the same routes as Monarch. For Stansted, many popular routes are now only left with the low-cost but very basic service of Ryanair and Monarch could benefit by bringing something new to Stansted since Essex, Cambridgeshire and Hertforshire are all very affluent areas and would all desire something with a little more service from their local airport